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| 琼东南盆地古近纪沉积充填演化及其区域构造意义 | |
| 引用本文： | 钟志洪,王良书,李绪宣,夏斌,孙珍,张敏强,吴国干.琼东南盆地古近纪沉积充填演化及其区域构造意义[J].海洋地质与第四纪地质,2004,24(1):29-36. |
| 作者姓名： | 钟志洪 王良书 李绪宣 夏斌 孙珍 张敏强 吴国干 |
| 作者单位： | 1. 南京大学,地球科学系,南京,210093;中国科学院,广州地球化学研究所,广州,510640 2. 南京大学,地球科学系,南京,210093 3. 中国科学院,广州地球化学研究所,广州,510640 4. 中国科学院,南海海洋研究所,广州,510301 |
| 基金项目： | 中国科学院知识创新项目(KZCX2 SW 117)，中科院广州地球化学研究所-南海海洋研究所边缘海地质重点实验室联合资助项目. |
| 摘 要： | 琼东南盆地是发育于南海西北部的新生代张性断陷盆地。始新统和早渐新统崖城组属过充填型或平衡充填类型，在盆地各个断陷内均具有砂岩-泥岩-砂岩三重沉积充填结构；晚渐新统陵水组在北部坳陷带属过充填及平衡充填类型，发育砂岩-泥岩-砂岩三重沉积充填结构，而在中央坳陷带则属由砂岩-泥岩二重沉积充填结构组成的欠充填型。古近纪盆地的沉积充填结构演化反映了始新世-早渐新世断陷阶段与晚渐新世断拗阶段的盆地演化历史，其中，晚渐新世盆地断拗阶段的发育是南海海底单期扩张过程的结果。 |
| 关 键 词： | 沉积充填结构 断拗阶段 海底扩张 琼东南盆地 南海 |
| 文章编号： | 0256-1492(2004)01-0029-08 |
| 修稿时间： | 2003年5月25日 |
THE PALEOGENE BASIN-FILLING EVOLUTION OF QIONGDONGNAN BASIN AND ITS RELATION WITH SEAFLOOR SPREADING OF THE SOUTH CHINA SEA |
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| ZHONG Zhi-hong.THE PALEOGENE BASIN-FILLING EVOLUTION OF QIONGDONGNAN BASIN AND ITS RELATION WITH SEAFLOOR SPREADING OF THE SOUTH CHINA SEA[J].Marine Geology & Quaternary Geology,2004,24(1):29-36. | |
| Authors: | ZHONG Zhi-hong |
| Institution: | ZHONG Zhi-hong~ |
| Abstract: | Qiongdongnan basin is a Tertiary extensional basin located at the northwest of the South China Sea. From Eocene to early Oligocene, the Qiongdongnan basin was over-infilled or infilled in balance. In almost all the depressions of Qiongdongnan basin, is developed the triple sand-mud-sand sedimentary architecture. During late Oligocene, Lingshui Formation was over-infilled or infilled in balance in the northern depressions with the triple sedimentary architecture of sand-mud-sand. While in the central basin, it was hungry infilled. The sedimentary architecture is characterized by only sand-mud. The Paleogene sedimentary architecture reflected the dynamic history of Qiongdongnan basin during rifting stage from Eocene to early Oligocene and late Oligocene rifting-subsiding stage. The development of Qiongdongnan basin during late Oligocene rifting-subsiding stage is closely related with the seafloor spreading of the South China Sea. |
| Keywords: | architecture of sedimentary-filling rift-subsiding stage seafloor spreading of the South China Sea Qiongdongnan basin |
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